3Com CoreBuilder 2500 Getting Started Manual page 67

Table 7-2 Troubleshooting Abnormal System Processor Status LED Activity
LED Status
Run LED does not illuminate
Processor LED lights yellow
Power LED lights yellow
(Only appears in systems with
redundant power supplies)
Fan LED lights yellow
(Only appears in systems with
redundant power supplies)
Temp LED lights yellow
Config LED lights yellow
Possible Sources of the Problem
Diagnostic software is not running
System processor failure
Power supply is out of specification
Fan has slowed or shut down
System temperature is too high
Wiring closet is too hot
System vents are blocked
System fans are not operating
System processor has failed
Thermal sensor is faulty
Backplane is faulty
Hardware and Software revision
mismatch
Try this...
Call 3Com Technical Support or your service representative.
™
1 Shut down the CoreBuilder
2 Call 3Com Technical Support or your service representative.
Call 3Com Technical Support or your service representative.
1 Shut down the CoreBuilder ™
If the system is not over temperature (that is, if the Temp LED is
not lit), you may continue to run the system until service is
scheduled. However, the system should be serviced.
2 Call 3Com Technical Support or your service representative.
™
1 Shut down the CoreBuilder
2 Verify that the room temperature meets the system's
specifications. See Appendix A: System
3 If the temperature is too high, lower the room's thermostat and
wait until the room temperature meets the specifications.
4 Verify that nothing blocks the airflow from the system's vents.
5 Restart the system.
If the Temp LED still lights, the room temperature is still too
high or the system processor is faulty.
™
6 Shut down the CoreBuilder
Technical Support or your service representative.
1 If you have added a new module, remove it.
2 If you have just updated software, reload the old version of
software.
3 Call 3Com Technical Support or your service representative for
hardware and software compatibility information.
Diagnosing Problems 7-3
system.
system.
system.
Specifications.
system and contact 3Com